Duplicate cache fpc for same page with same query when use varnish

[rogerdz]

Description (*)

Same as #38269 but for varnish
Inspire by: https://varnish-cache.org/docs/trunk/reference/vmod_std.html#string-querysort-string

Related Pull Requests

Fixed Issues (if relevant)

1. Fixes magento/magento2#<issue_number>

Manual testing scenarios (*)

1. Setup magento with varnish
2. Clear cache: bin/magento cache:clean
3. Run command: curl -I --location-trusted 'https://magento2.test/gear/bags.html?activity=8&style_bags=24' | grep -i X-Magento-Cache-Debug, it will return x-magento-cache-debug: MISS => correct
4. Run command: curl -I --location-trusted 'https://magento2.test/gear/bags.html?activity=8&style_bags=24' | grep -i X-Magento-Cache-Debug, it will return x-magento-cache-debug: HIT => correct
5. Run command: curl -I --location-trusted 'https://magento2.test/gear/bags.html?style_bags=24&activity=8' | grep -i X-Magento-Cache-Debug => it return x-magento-cache-debug: MISS => wrong
6. Run command: curl -I --location-trusted 'https://magento2.test/gear/bags.html?activity=8&style_bags=24&' | grep -i X-Magento-Cache-Debug => it return x-magento-cache-debug: MISS => wrong

Questions or comments

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

Resolved issues:

1. resolves [Issue] Duplicate cache fpc for same page with same query when use varnish #39706: Duplicate cache fpc for same page with same query when use varnish

[m2-assistant]

Hi @rogerdz. Thank you for your contribution!
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[rogerdz]

@magento run all tests

[hostep]

Nice, this is also being suggested in https://gist.github.com/peterjaap/006169c5d95eeffde3a1cc062de1b514?permalink_comment_id=5197461#gistcomment-5197461

Looks good to me!

[engcom-Hotel]

@magento create issue

[peterjaap]

Micro-optimization; add an if check to avoid re-setting the URL (and causing load and logging) when there are not multiple parameters;

if (req.url ~ "\?.+&.+") {
    set req.url = std.querysort(req.url);
}

[rogerdz]

@magento run all tests